But there was nothing festive about the gunfire that struck struck seven people, critically injuring one, as the night came to a conclusion.

The "night-club-atmosphere" river jaunt overlooking the Detroit-Windsor skylines from aboard the Detroit Princess Riverboat quickly turned violent when tempers flared about 1 a.m. early Monday.

Detroit police on Tuesday said the suspected shooter, a 28-year-old woman donning a green dress while aboard the boat, fled after the ruckus in an early 2000s gray Ford Explorer and remains at large.

An "altercation" ensued aboard the 1,800 passenger former gambling boat between the suspect and other individuals, but the tensions hadn't subsided when the boat came into port near Atwater and Civic Center Drive.

Police say a woman returned as passengers unloaded from the ship and opened fire, striking seven people. Three male victims, ages 31, 25, 29; and four female victims, ages 37, 24, 26, and 33, received gunshot wounds to the bodies.

The 31-year-old male is critically injured while the remaining victims suffered serious injuries, according to Detroit police.

Anyone with information on this crime is encouraged to call the Detroit Police Department at 313-596-1340.